minix/lib/libc/arch/i386/misc/io_insw.S
2010-03-03 14:27:30 +00:00

19 lines
396 B
ArmAsm

/* insw() - Input a word array Author: Kees J. Bot */
/* 18 Mar 1996 */
/* void insw(U16_t port, void *buf, size_t count); */
.text
.globl _insw
_insw:
push %ebp
movl %esp, %ebp
cld
push %edi
movl 8(%ebp), %edx /* port */
movl 12(%ebp), %edi /* buf */
movl 16(%ebp), %ecx /* byte count */
shrl $1, %ecx /* word count */
rep insw /* input many words */
pop %edi
pop %ebp
ret